/Engine/Source/Runtime/Networking/Public/Interfaces/IPv4/IPv4Address.h
AND operator for masking IP addresses with a subnet mask.
The masked IP address.
[FIPv4Address](API\Runtime\Networking\Interfaces\IPv4\FIPv4Address) operator& ( const [FIPv4SubnetMask](API\Runtime\Networking\Interfaces\IPv4\FIPv4SubnetMask) & SubnetMask ) const